Improved furnace for heating tubes



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PATRICKIREILLY, 0F READING, PENNSYLVANIAQASSIGNOR TO'SEYFERT,

vtaurinos & co,

or sani; PLAGE.

Letters .Patent N 96,267, datati October 26, 1869.

IMPRovzin PURNACE roR HEATING TUBES.

*WQ-. The Schedule referred. to in these Letters P atent and making part of the same.

-itscll",.both as regardsniaterial used and space occupied, but also iii the cousuiiiptioii of fuel,A while the tubes are more thoroughly heated throughout in my iniproved furnace thauin those commonly used,

Description of the Accompanying Drawing.

Figure 1 is a side view of my improved furnace for heating tubes;

Figure 2', a vertical section on the line 1-2, fig. 1;

Figure 3, a sectional plan; and

Figure 4, a sectional plan of an ordiiiarytnbe-furnace.

General Description.

l l n n In figs. 1, 2, und 3, A represents the niterior of the fin-nace, which is of length sufiicient to admit the tubes, and of no greater breadth (ir-height than is necessary to permit the free circulation of the ignited products of combustion round the tubes, each end of the furnace being provided, as usual, with a door, c

Midway oi' therealniuts, between the opposite ends of the furnace, the latter communicates throughan outlet-tine, a, with a chimney, B.

At each end ot the furnace, and at right angles or thereabouts to the same', is arranged a fire-place, D, A

furnished with ordinary doors d and grate-bars e, and having a bridge, j, ovcrwliich the ignited products of combustion pass into the interior of the furnace, in the direction pointed outby the arrows, to the. chimney B.

.lhe advantages of my improved tube-furnace will be best explained by comparing it with ordinary furnaces heretofore used in tube-works, a sectional plan ofsnch a furnace being illustrated in iig. 4.

In lthis case one side of the furnace is entirely occupied by a series of tire-places, D, andpou the opposite side is avinassive and costly structure, containing.

a. series of chimney, B.

' Independently of the costly character of vfurnaces of this class, both as regards their construction, the enormous amount of fuel which they require, and the space occupied, there is a serious objection. to them as re ,rgards'the action of the flame on the. tube placed on the bed of the furnace, for, as the flames from the iire- A places takev a"nearly direct course across the furnace,

from the different bre-places to the outlet-fines coinn'iul nicating with 'the chimney, as shown by the arrows, the tube (illustrated by dotted lines) must of necessity be subjected to a greater heat at some points than at others.

This Want of uniformity in the lheating of the tube is obriated in.' my improved furnace, for the ignited products of combustion, after passing over the bridges of the two fire-places and iiiipinging against the ends of the tube, turn abruptly, and pass longitudinally through the furnace, along and in contact with the ftlibe, ineet at the flue a, and pass through the saine to the chimney; the tube has thus the benefit of the Haines throughout itsentire length, and a uniform heat is impartedto it throughout.

It will be-evident that by the arrangement of two fire-places, one at each end of the furnace, and a central tine communicating with the chimney, not only is the consumption of the fueleconoinized, but a more regular heat is maintained, and the tubes uniformly heated throughout, while the ent-ire structure of the improved furnace is cheap and simple when viewed iii comparison with the ordinary furnace, shown by iig'. ,4.

1f desired; the tire-places may be situated at :t :von one side -of the furnace, and the outlet-tine (inthe op posite side; but 1 preferthe arrangement illustrated in tig. 3, as it tends to the cconomizing of space.

Claim. i

The arrangement, substantially as described, of the furnace A, fire-places D D, and outlet-flue (t to the chimney.

In testimony whereof, I have signed my name to this specitcationfin the presence of two subscribing witnesses.

.PATRICK REILLY.

Witnesses:

JN0. S. Sonnonnnn,

F. G. DWIGHT.

fines, all of which communicate with a. 

